Correlations at a quantum phase transition in interacting Bose systems
Strongly Correlated Electrons
2007-05-23 v1 Statistical Mechanics
Abstract
We have investigated the correlation functions of interacting bosons at the generic superfluid-insulator transition, a prototypical quantum phase transition, in two dimensions in the spherical limit. Unexpectedly the spatial correlation functions show non-power-law behavior consisting of two parts: short-range correlation due to the particle-hole pair excitations and long-range off-diagonal order due to the single-particle condensation. The temporal correlation functions, on the other hand, show power-law behavior.
Cite
@article{arxiv.cond-mat/0505752,
title = {Correlations at a quantum phase transition in interacting Bose systems},
author = {Min-Chul Cha},
journal= {arXiv preprint arXiv:cond-mat/0505752},
year = {2007}
}
Comments
10 pages, 6 figures